package com.gongyi.sync;

//不安全的买票
//线程不安全，有负数
public class UnsafeBuyTicket {
    public static void main(String[] args) {
        BuyTicket station = new BuyTicket();

        new Thread(station, "苦逼的我").start();
        new Thread(station, "牛逼的你们").start();
        new Thread(station, "可恶的黄牛党").start();

    }
}

class BuyTicket implements Runnable {
    //票
    private int ticketNums = 10;
    boolean flag = true;//外部停止方式

    @Override
    public void run() {
        //买票
        while (flag) {
            try {
                buy();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }

    }

    private void buy() throws InterruptedException {
        //判断是否有票
        if (ticketNums <= 0) {
            flag = false;
            return;
        }
        //模拟延时
        Thread.sleep(100);
        //买票
        System.out.println(Thread.currentThread().getName() + "拿到" + ticketNums--);
    }
}
